Pump



1943- 1.. c. RbTTER ET AL.

PUMP

Filed Aug. 24,

1942 3 Sheets-Sheet l FIG.6.

Oct. 26, 1943- c. ROTTER ET AL PUMP Filed Aug. 24, 1942 3 Sheets-Sheet 2FIGZ.

PUMP

Filed Aug. 24, 1942 5 Sheets-Sheet 5 mun Q vOE.

cant pumps. 1

i the drawings.

. Patented Oct. 26, 1943 e ArEs mm cmce 5,;

' PUMr I Lutwin i C. Rotter, Maplejwood, and ;August D.: 1

Reisert, Victor Klein, and Rudy F. Schnelle r; I St. Louis, Mo., assignors to Lincoln Engineering CompanygSt. Louis, Mo a corporation ofMis Application Augusta, 1942, Serial No. 455,852 11 claims; (c1. 221-4.7.1)

This invention relates to pumps, and with regard to certain morespecific features,- to-lubri- Among the several objects of the inventionmay be noted the provision of a lubricant pump driven by a continuouslyoperating internal-combustion engine without 'de clutching the engineeach time the lubricant flow is cut off; the provision of-a pump of theclass described in which positive priming of the pump is obtainedwithout the use of check valves in the priming structure; the provisionof apparatus of the class described in which lubricant may be maintainedin a fluid condition at various temperatures, in-

cluding the coldest; and the provision of a paratus of this class whichis simple, compact and reliable. Other objects will be in part obviousand in part pointed out hereinafter. j

The invention accordingly comprises theelements and combinations ofelements, features of construction, and arrangements of parts which willbe exemplified in thestructures hereinafter described, and the scope ofthe application of which will be indicated in the following claims.-

In the accompanying drawings,"in which is illustrated one of variouspossible. embodiments of the invention,- g a Fig. 1 is a plan view ofthe apparatus; I Fig. 2 is a front elevation of Fig. 1; Fig. 3 is a sideelevation of Fig.2, taken the right;

i Fig. 4 is a horizontal section taken on line 440fFig-2;- i

Fig. 5 is a vertical .sectiontaken on line 5- 5 ofFi'g. 1; and,

V 5 l Fig. 6 is a horizontal sectionj tal-ren on line Similar reference.characters indicat corresponding parts throughout the several .views ofi United States Patent 2,221,585, dated November 12, 1940, shows agasoline engine driven lubricantpump in which a mechanical drivingconnection is released at a predetermined lubricant pressure. v 7

United States Patent 2,276,207,dated March 10, 1942, shows a gasolinedriven lubricant pump in. which an inlet-port iscovered" by the opera-'tion of .a mechanical linkage when a predetermined pressure isobtained, thereby unloading the prime mover without opening any mechan-.ical connection. it

In our United States patent application, Serial No. 441,620,. dated May4, 1942, for Pump, unloading operation is accomplished hydraulically.

frorn the-like with casters or The present invention isan improvementupon saidpatents andapplication." l

Referring new more particularly to Fig. 1, there is shown at numeral 1 abase for carrying the apparatus to bedesc'ribed. This base may be madeportable b'yinounting it' on a truck or wheelspor it may be bolted down,if desired. i

. Upon the base I is mounted an internal combustion engine unit 3comprising in th present case a gasoline engineS, including all of theaccessories for' independentwperation, such as 'a fuel tank I,carbureting system 9, startingpul- 'leyTZ'QeXhauSt port ll, etc.Associated with the drive shaft 13 of this engin'eis a. clutch l5manuallyoperable. to be opened and closed by a manual control handle ll;This is .for permitting engine starting and. Warming prior to. couplingitto its driven member.

terenters, through a packing gland 25 intojhous- :ing 23.Thishousingisian assembly, of castings, but one numeral ,is here used todesignate it generically. The shaft is supported internally on bearingsZHFig. 6) 1 The housing 23;;is supported uponthebase I and includescentral, vertical" bearings 29 for a rotary shaft 3|. To shaft 3| iskeyeda worm wheel 33 meshing with a worm. gear 35. The latteris keyed toshaft 2!. Thus, when the clutch l5 is; closed, the prime mover 3 maycontinuously drive the shaft 3| through gears 35 and 33."

J The upper end of the shaft 3 I is cut as a pinion ear- 3] ,which.drives on ;opposite sides, gear clusters 39.- Each. cluster 391s inefiect'tw coaxial gears of equal size cut into the ends of a shortcylinder. one of whichmeshes-with' the pinion 31 (on shaft 3!) l and theother of. which mesheswithfla ring gear, ofa spider 43; Each spider 43is formedtwith paddles 45. There are two'oppositely-located spiders 43,as shown; and

these rotateinoppqsitedirections. The paddles thereon arerespectivelyarranged so that. their studs threadedinto the bottoms "of tanks 5|which respectively, carry' different. lubricants. Anopening53 isindicated in each bottom 49. These openings communicate. withattached'suc- :tion :inlet manifolds 55 upon which the 'respec-' ing aparticular pressure for its transmission and thereforediffererit size ofpumping "mechanism. We will therefore describe the left-hand. pumpingmechanism in detail, and it will be understood that the right-handpumping mech-fanism responds to the same description, except thatcertain of its parts Will'be'found tobe larger; Referring to theleft-handma'nifold 55 a'l ousjh-j ing 51 forms a cylinder 59 for'aplungerjfi l. An

building up of pressure is prevented. When this valve 6 is opened, theincipient reduction in pressure permits the valve 19 to be opened byspring 83, whereupon fluid is available at the inlet 89 for pumping at apressure below that which will close thevalve 19.

. pthe shaft iil rotates the paddles 4 5 also ro- "tate' and b3} a skewaction tend to pack lubricant ,dpwn toward the bottom ll! of themanifold 55. "In order to perfect the priming action which r these skewpaddles 45 initiate, the inlet 91 is led iiumeral fi in Big, 4). Thispriming cup IE5 outlet check valve 63 for thecylirider 'communi-" cateswith an outlet 65. The outlet 65 is intended to receive theusual'fiexible' hose '4 at .r

the end of which hose is a control valve Bior' starting and shutting offthe flow of lubricant.

Check valve 63 ina'horizontal plane (Eig. 4). also, communicates withaipipe fir'l which leads to" aj'body 6 9 in which is a sliding plunger;II.

Onihe'top of the plunger-ll is, a sealing disc 13rmovable' with theplunger.; The-body 63 is organized with a member 15 which forms a com.-

partment in which is a-sliding stem'TI. At the .end of the stem is saidplunger ll. On vthe other end; o'fvthe stemis a valve head 19 whichmoves to." and from a seat 8! in the side ofthe manifold 3 .55."I'hissea-t forms part of an inlet 89 for the cylinder 59. A springB3-acts against one end of 'the hollow in 'member 15 and reacts againstahead 85 'onthe stem 11. so aslnormally tables the stem into a positionwherein the valve head 19 is open andaway from the'seat 8|, as shown.Upon a predetermined pressure building up. in pipefil, the plunger Hwill be pushed in a direcitioritoforce thetstem 11 against spring 83,until the'he'ad 1s contacts and clos'es the seat 8L As indicat'ed thestem 11 passes througha packing -gland"8l'. Part 15Jmayb adjusted on itsthreads in"bbdy '69,?tlius' changing the tension in spring -83ia1'1'dithf pressure at which the valve head 19 will 'iunctionf Y I P The port89 is crossed by the front end of a reciprocating plungerbr' 'piston 6which operates in't'he cylinder 5955"This lunger; 6| at 95 has a f j frssh hsi tiss z s it t a sis s ij 91 1 79? 'theflatter passing through a:packing gland '99 thcrosshtad Thebrosslie'adfIQIi is-io'rmed with anintermediate space "between the" hdwise flats 109 which togeth'ri'withp'ad'lo-lfform afollowe'r' 'yoke 'I husthe eccentric ":l ll forms arotarypositive motion cam forthe'follower yoke flats l 09, there;

b rec'iprOc'atmg the rod 91 and. plunger 6:1. "A slot 113: isprovided'sin the bearing padllflilafor permitting: motion of the v yokewith respect to v 'Fromthe above it-will beiseen tha't thesplunger atesthe space Ill by means of a stin .i

dr' Il9'is' a fre I fitting piston part I2! formed in associationwiththe connection 95. This pisto'n is rigid'on' the'piston rod 91 and,during a compression stroke of the plunger 6|, moves'out into"a"freeposition in the space Ill. At this t meth addlss 4s (alsnswith rav t andvac cnsatsdhr .p stsin' in pas? 5) Dash lubricant into the priming cupI15. Upon a suction s rok of Bll hg iii-l ths pist h l?! is ,ters he clinder H2 ahsiisrsss, ubricant ite the u 1-1 rou h assage-rs 8" and. ito th mist 9. hhsrar mi s he shares hea o he a ts: A f r s ihare s shupph he 9st t olss an xc ss amohht. Qi lshri aht over hat asset thrpr mhs slips asls past this ee. spac @XQUQQi pi tes W: i ts hamh r Ml. Thisi th sissraiic f under sash. sg sitishs s h a v l9.

aths othsrhahd the val-ts is ss d and the Dist i211 m i cs am. the. aceH i t r d i 59; th t ee-spac r slsa ah s i twssh tarts H9 hd a ar tapped i 2 2-19; it? tsisssahs-bas s ts h a e thsre) 1s. de ai edahtsihst s pr min o he s m 151 QP l- QR PS 0 the. Valve 19., ir s sshlzss ts rom th mi sin @1 13. L hen the va ve 1% ut thssi; h qt any 'sqihhls t di .hssh valve ssris m ns t as t s a s It v .1; be, hs-tgdw thatthspt ehimha tsd s the plunger 6| by the circular car t. operatingbetween he. flataces. .5. is 29i shin ss t during both thgCQIIlpiBSSiQI}QIQQ SQQlQlQTI SIZX OKES, buti tcsh ist Sims. srmsni msim. whi is ideal'for low deceleration and acceleration of he plun erfil-at hs e dsof. ts s nq s hat is when the port 89 is uncovered.Itisduring this period; t at the auxiliary piston 1; s sist to prime.Thus the piston l2l primes, under ds l nd i q sr 1 r p Also, thecooperation between the. piSUQn. I-ZI nd. i ylinder, M331; is duringtheislowi part of ,the,movement,.that is, near the end ofthemeticiprocation rearward; Hence, if thevalvefli-is closed, themisplenty. of time intwhichtrapped fluid in the; priming rcup, H35 mayescape to the primin pace. I lMhroush ther aranc s w msmhsrs 4-L n1m 3'Similar reference characters have been applied to the flhrgenpumppartsatthegloweri right of igs, h nd t n-r specti ely exce t atthese-h ve -heshrim diwhsr rthey efer to. parts. ofya differentlsiz e but. havingv the;same functions. In order-m mma a qoncept of the relatio h p f nartswhena. 913L02 I21 .or IZII/isinthe space In, the right-hand portions oftheseEigsi Land 5 may be examined, It; will-be understoodrthat theplunger. in .694 (corresponding to. plungerc H in 649 iswmadeilarger.to. operate; correctlyl'with 'M able into and from this cylin-' thelarger-plunger 6|. or, if desired, aspring wltha'difl'erentforcemaybeused. I l

The valve I9 closes on its s'eat8I bymoving downstream in the connectionSi -between the priming cup H and cylinder 59, and this insures apositive closure action of the valve against pressure in the cup II5.This insures return of lubricant past the clearance betwen the piston -I2 I and the cylinder I I9 under high-pressure conditions and one can beassured that there will be no improper loading of the plunger BI .duetoany priming action at the time it is desired to limit pressure in theclosed outlet line.

In order to guard the teeth of the gears 4|, annular shields I23 areclamped between the containers 5| and the bottom castings 49. Theseshields I23 will prevent the fingers of an'operat'or, who may reach intoa container 5|, from becoming caught in the gear teeth Since thisapparatus is intended to have portable .applicationsit will occur thatsometimes it may be in very cold. locations, such as out-ofdoors inwinter. Under such conditions, many lubricants become stiff anddiflicult to pump, and

haust port I I. When detached a muffler may be screwed into I I.

The other end of this exhaust line I2! is connected to a jacket I29which surrounds the lower portions of the body 23 including themanifolds 55. Exhaust openings from the jacket I29 are indicated at I3IIt will be seen that the rather flat shape of the manifolds 55 andconnected parts is arranged transversely of flow between the inlet I30and the outlet I3I, thereby enhancing heat exchange and operating to asubstantial extent as a muflier, due to the bafiling and cooling actionof the exhaust gases.

Operation is as follows:

The clutch I5 is manually opened and the engine 3 started, whichimmediately sends exhaust gas into exhaust pipe I2I (if connected) andthrough the jacket I29, thus warming the lubricant around the manifolds55. Then the clutch I5 may be closed. At this time, if there is no'pressure'in the lines connectedwith the outlet continues to operate toreciprocate the pump plungers without further building up pressure. Thenwhen an outlet line valve is opened, pressure is incipiently reduced inthe respective line, causing opening of the respective inlet valve I9and positive priming andpumping of lubricant. The non-positive skewprimers 45 act at all times that the engine is operating and the clutchclosed,

"'butthe p'ositive primers I 2| are effective to prime only when therespective valves 19 are open. At other times lubricant-squeezes by theclearances between II9 and I2I.

It will be understood that all necessary or desirable-auxiliaryaccessories are used, such as lids I33 and closing locks I35 on thecontainers 5i.

Also, both reciprocating plunger elements 6i, 6| may be made of equalsize if it is desired to pump the sameweight of lubricanton either sideof the apparatus; or the apparatus may be built as a single tankand'single plunger unit.

This obviously would be done simply by eliminat- I ing one side of theconstruction, so far as the tank and plungerelements are concerned,

Each cluster 39 ismade simply by machining teeth into opposite ends of acylinder, so that the central portion of the cylinder and the addenda ofthe teeth act as bearings in suitable coaxial openings in the bottoms 49and in an intermediate member 59. Packings 52 are used between theintermediate member 50 and the bottoms 49, around the middle portions ofthe cluster 39. This makes a simple arrangement for mounting theserotary clusters.

In view of the above, it will be seen that the several objects of the.invention are achieved and other advantageous results attained.

As'many changes could be made in the above constructions withoutdeparting from the scope of the invention, it is intended that allmatter contained in the above description or shown in the accompanyingdrawings shall be interpreted as illustrative and not in a limitingsense.

We claim:

1. A pump comprising a lubricant manifold, a pumping cylinder having anoutletand an inlet, a plunger passing through said manifold and having aportion reciprocating in said cylinder and traversing said inlet, apiston on said plunger outside of said cylinder and reciprocating insaid manifold, and a part forming a priming cup connected with saidmanifold by a cylindric portion cooperating freely with the piston andinto which the piston moves during a suction stroke of the plunger inthe pumping cylinder, said priming cup being connected with said inletfor compression of lubricant thereto during a suction stroke of theplunger and while the piston moves from the manifold through saidcylindric portion and toward said priming cup.

I 2. A pump comprising a lubricant manifold,

a pump cylinder having an outlet and an inlet,

a plunger passing through said manifold and having a portionreciprocating in said cylinder and. traversing said inlet, a piston onsaid plunger outside of said cylinder and reciprocating in saidmanifold, a part forming a priming cup connected with said chamber by aportion cooperating freely'with the piston and into which the pistonmoves, said priming cup being connected with said inlet for compressionoflubricant thereto during a suction stroke of the plunger and While thepiston moves from the manifold toward said priming cup, a valve seatassociated with said inlet,.a valve movable to and from said seat, meansnormally biasing thevalve from the seat, and means for transmittingfluid pressure "from the outlet of the pump cylinder to apply pressureagainst said bias and to the valve to seat the latter at a predeterminedoutlet pressure,

3. A pump comprising a suction manifold for lubricant, a pump cylinderhaving an outlet and an inlet, a plunger passing through saidmanimanifold by a cylindric portion cooperating freely -with the pistonand into which the piston moves during a. suction stroke of the plunger,said priming cup being connected with said inlet for compression oflubricant thereto during a suction stroke ofv the plunger in the pumpcylinderxand while the piston moves from the manifoldrtoward' saidpriming cup, avalve seat. as-

sociated with said inlet, a valve movable ton-and from said seat,meansnormallybiasing the valve from the seat, and meansfor transmittingfluid pressurefrom the. outlet of the pump cylinderto apply pressureagainst saidbias and to the valve to seat the. latter at apredeterminedoutlet pressure, said free fit between said piston and the cylindricportion allowing return of. fluid from the priming .cup to the manifoldupon reciprocation when said valve is closed.v

-.4. A pump comprising a suction manifold for lubricant, a cylinderhaving an outlet'and an inlet, a plunger passing through said manifoldand having a portion reciprocating in said cylinder and traversing saidinlet, a piston on said plunger outside of said cylinder andreciprocating in said manifold, a part forming a primingchamber'connected with said manifold by a cylindric portion cooperatingfreely with the piston and into which the piston moves during a suctionstroke of the plunger, said priming cup being connected with said inletfor. compression of lubricant thereto during a suction stroke of theplunger and while the piston moves fromthe manifold toward said primingcup, driving means for reciprocating the plunger, and non-positive meansoperated from said driving means for advancing lubricant into saidmanifold and the priming cup.

5. A pump comprising a lubricant container,

suction manifold connected thereto, a cylinder having an outlet and aninlet, a plunger passing through said manifold and having a portionreciprocating in said cylinder and traversing said inlet, a piston onsaid plunger outside of said cylinder and reciprocating in saidmanifold, a partforming a priming chamber connected with said chamber bya portion cooperating freely with the piston and into which the pistonmoves during a suction stroke. of the plunger, said priming cup beingconnected withsaid inlet for compression of lubricant thereto during asuction stroke of'the plunger while the piston moves from the manifoldtoward said priming cup,v driving means for reciprocating the plunger,and rotary skew paddle means ,in the container and operated from saiddriving means. for advancing lubricant from the container, through saidmanifold and to the priming cup.

6. A lubricant pump comprising a suction manifold for lubricant, acylinder having an outlet and an inlet, a plunger passing through saidmanifold and having a portion reciprocating in saidcylinder andtraversing said inlet, a piston on said plunger outside of said cylinderand re.-

.ciprocating in said manifold, a part forming. a priming chamberconnected with said chamber by a cylindric portion cooperating freelywith the piston and into which the piston moves during a suction strokeof the plunger, said priming cup being connected with said inlet forcompression of lubricant thereto during. a suctionstroke of the plungerwhile the piston moves from the manifcldtoward said priming. cup, a,valve seat associated with said inlet, a valve movable to and,

from said seat, means normally biasing the. valve from the seat, and;means for transmitting fluid pressure from the outlet of the: pumpcylinder to apply pressure against said bias and to the valve to seatthe latter at a predetermined outlet pres sure, said free fit betweensaid piston andythe cylinder allowing returnof fluidfrom the priming cupto themaniiold. upon reciprocation when said valve is closed, said valveclosing downstream .inthe. connection between the priming cup and thecylinder. i. cw an lubricantv pump comprising arpairoi-adjacently'located vertical. lubricant containers, on- .pos'itelylocated "and Spaced manifolds below :said containers, a; verticallylocatedshaft betweensaid manifolds, Opposite coaxial pump. cylindersconnected with said manifolds, opposite coaxial re.- ciprocating plungermeans for said cylinders, a yoke connecting 'said plunger means and:sur.- rounding said shaft, eccentric' means'driveniby the shaft andconnected withsaid. yoke for reciprocating said plunger means-,- andmeans for .driv.-

ing the shaft. e

8. A lubricant pump comprising a pair of adjacentlylocated verticallubricant. containers, op positely located and spaced manifolds belowsaid containers, a. vertically located shaft between. said manifolds,opposite horizontal coaxial pump cylinders connected with saidmanifolds, opposite coaxial reciprocating plunger means for saidcylinders, a yoke-connecting saidplunger means'and surrounding saidshaft, eccentric means driven by the shaft and connected with said yokefor reciprocating said plunger means, means for driving the shaft,horizontally located spider gears respectively at the bases; of thecontainer and rotatable therein, lubricant driving skew means on. saidgears, and geard'rivi-ng means between the upper end of said shaft andsaid spider gears respectively.

9. A lubricant pump comprising. a vertical luhricant container, a,manifold below said contamer, a vertically located shaft, a horizontalpump cylinder connected with saidmanifold, a coaxialreciprocatingplunger means for said cylinder, means for driving theplunger from said shait, means; for driving, the shaft, a horizontallylocated spidergear at the. base of the container and rotatable therein,a lubricant driving skew meanson said gear, andgear driving meansbetween the upper end of said. shaft and said spider gear. '1'

10 A lubricantPnm-p comprising a vertical container having an outletopening at the bottom, bearing; means-attachedto the bottom adjacentsaid. opening, an open spider gear rotary on said bearing, means andhorizontally rotary at the base oi the container, the teeth of, th gearbeing adjacent to the outer Walls of. the container, and paddle meansarranged radially in the open portion'of said spider gear. I

ii. A lubricant pump comprising a vertical container having; an outletopening ,at the bottom,

bearing; means, attached, to the; bottom adjacent saidopening, an openspider: gear rotary onsaid bearing, means and horizontally rotary atthe. base the container directly-above the teeth of said gear, andpaddlemeans. arrangedradiallyin the open portion of said spider gear,

AUGUST Dr REISERT'.

VICTOR-G; RUDY

